1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bond [772]
3 years ago
9

Which chemical equation is unbalanced? C + O2 mc024-1.jpg CO2 Sr + O2 mc024-2.jpg 2SrO 6H2 + 3O2 mc024-3.jpg 6H2O H2 + H2 + O2 m

c024-4.jpg H2O + H2O
Chemistry
2 answers:
Anna007 [38]3 years ago
8 0
<span>Sr + O2--->2SrO</span><span>is the right answer</span>
Dafna11 [192]3 years ago
3 0
<span>The correct answer would be the second option. It is the reaction Sr + O2 = 2SrO that is not balanced correctly. To be able to say that an equation is balanced, it should be that the number of each atom in the reactant and the product side is equal. As we can see, at the reactant side there is only one Sr while in the product there are 2 Sr atoms.

</span>
You might be interested in
When magnesium combines with oxygen, the reaction involves
nikdorinn [45]

Answer:

The correct answer is option c. transfer of electrons from Mg to O.

Explanation:

Hello!

Let's solve this!

When Magnesium (Mg) reacts with oxygen (O), magnesium oxide is formed.

This reaction is spontaneous and occurs with oxidation number +2 of magnesium and oxidation number -2 of oxygen. It is an ionic union, so magnesium transfers its electrons to oxygen.

We conclude that the correct answer is option c. transfer of electrons from Mg to O.

7 0
3 years ago
If the caterpillar keeps moving at the same speed, how long will it take to travel 6cm?
Solnce55 [7]

It will take 15 s to travel 6 cm

<h3>Further explanation</h3>

Given

distance versus time graph

Required

time travel

Solution

Caterpillar motion is a straight motion with a constant speed, so that the graph between distance and time forms a diagonal line

If we look at the graph, we can determine the time taken when the distance reaches 6 cm (y axis) by drawing a line to the diagonal line and cutting the x-axis as time, and we get 15 s

Or we can also use the formula for motion at constant speed:

d = v x t

With v at point 2,5 of 2/5 m / s, so the time taken:

\tt t=\dfrac{d}{v}=\dfrac{6}{2/5}=15~s

4 0
3 years ago
What is the relationship between absorbance and transmittance of a sample in a spectrophotometer? Plz help!!
Arlecino [84]

Answer:

thanks for the pointthanks for the pointthanks for the point

Explanation:

<h3>thanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the pointthanks for the póînt pa rin ang worksheets weeks ago by January</h3>
6 0
2 years ago
Are physical properties and chemical properties characteristics used to describe matter
raketka [301]
They both are properties that form the matter which they are today!
7 0
3 years ago
Why does a plant have a cell wall and a cell membrane?<br>ASAP Pls have to turn it in at 11:00pm​
Aleonysh [2.5K]

Answer:

The cell wall surrounds the plasma membrane and provides the cell tensile strength and protection. ... The cell wall surrounds the plasma membrane of plant cells and provides tensile strength and protection against mechanical and osmotic stress.

<em><u>h</u></em><em><u>o</u></em><em><u>p</u></em><em><u>e</u></em><em><u> </u></em><em><u>I</u></em><em><u>t</u></em><em><u> </u></em><em><u>H</u></em><em><u>e</u></em><em><u>l</u></em><em><u>p</u></em><em><u>s</u></em><em><u> </u></em><em><u>U</u></em>

<em><u>P</u></em><em><u>l</u></em><em><u>e</u></em><em><u>a</u></em><em><u>s</u></em><em><u>e</u></em><em><u> </u></em><em><u>M</u></em><em><u>a</u></em><em><u>r</u></em><em><u>k</u></em><em><u> </u></em><em><u>m</u></em><em><u>e</u></em><em><u> </u></em><em><u>A</u></em><em><u>s</u></em><em><u> </u></em><em><u>b</u></em><em><u>r</u></em><em><u>a</u></em><em><u>i</u></em><em><u>n</u></em><em><u>l</u></em><em><u>i</u></em><em><u>s</u></em><em><u>t</u></em>

4 0
3 years ago
Other questions:
  • How many moles of KNO3 are needed to make 600 ml of a 1.3M solution?
    14·1 answer
  • Which enthalpy change (î"h) is correct for a substance changing from the liquid phase to the solid phase?
    6·1 answer
  • Devante buys a helium birthday balloon for his mom at the grocery store, where the temperature is a comfortable 72oF. He takes t
    7·1 answer
  • Given a gas whose temperature is 418 K at a pressure of 56.0 kPa. What is the pressure of the gas if its Temperature changes to
    6·1 answer
  • A sample of a substance has a mass of 4.2 grams and a volume of 6 milliliters
    13·2 answers
  • 14 point. Please help need this ASAP.
    6·1 answer
  • 2. A solution is 0.01 M in Ba2+ and 0.01 M in Ca2+. Sodium sulfate is added to selectively precipitate one of the cations, while
    13·1 answer
  • Which statement correctly describes cellular respiration
    8·1 answer
  • A certain atom has a mass of 16 and an atomic number of 7. What element is this ?
    14·1 answer
  • How many moles of butane (C4H10) must be burned in an excess of O2 to produce
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!